200120202102001 has 4 divisors (see below), whose sum is σ = 200121406484032. Its totient is φ = 200118997719972.

The previous prime is 200120202101969. The next prime is 200120202102011. The reversal of 200120202102001 is 100201202021002.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 200120202102001 - 2⁵ = 200120202101969 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (200120202102011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 601941741 + ... + 602274106.

It is an arithmetic number, because the mean of its divisors is an integer number (50030351621008).

Almost surely, 2^{200120202102001} is an apocalyptic number.

It is an amenable number.

200120202102001 is a deficient number, since it is larger than the sum of its proper divisors (1204382031).

200120202102001 is a wasteful number, since it uses less digits than its factorization.

200120202102001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1204382030.

The product of its (nonzero) digits is 32, while the sum is 13.

Adding to 200120202102001 its reverse (100201202021002), we get a palindrome (300321404123003).

The spelling of 200120202102001 in words is "two hundred trillion, one hundred twenty billion, two hundred two million, one hundred two thousand, one".